Changing a demo game to a paid game

Hi, I'm getting ready to convert my demo game page on itch.io to a paid version. Will people that downloaded the game for free be able to access the new files I upload that will be paid? I am going to change the filename that butler uploads but want to be sure I am not giving the game away :)

ok interesting. would be nice it this was configurable to maybe set the limit to $5. I ended up just making a reward for the update and requiring new downloads to purchase a reward. it worked better because I was really interested in limiting the number of keys as well. Once I had this set up I sent manual keys to those that donated $5 or more.